Apparatus for facilitating the removal of deposit in locomotive-boilers.



PATENTED MAR. 19., 1907 G. H. PEARSON. ABPARATUSFOR FACILITATING THE REMOVAL OF DEPOSIT IN-LOOOMOTIVB BOILERS. APPLICATION FILED 8131224, 1906.

" magma.-

THE NORRIS PETERS co., WASHINGTON, D. c.

UITD

PA ENT FFICE.

CHARLES CLARK, OF CHICAGO, ILLINOIS.

APPARATUS FOR FACILITATING THE REMOVAL OF DEPOS lT lN LOCOMOTlVE-BOILERS.

Specification of Letters Patent.

ratenteoi March 19, 1907.

Application filed September 24, 1906. Serial No. 336.055.

T0 at whom, it may (JON/06PM.

Be it known that I, GEOFFREY HOPE PEAR- SON, a subject of the King of Great Britain, residing at 3 Groundwell road, Swindon, W iltshire, England, have invented new and useful Improvements in Apparatus for Facilitating the Removal of Deposit in Locomotive-Boilers, of which the following is a sp ecifi.-ation.

This invention relates to apparatus to be inserted in the water-spaces of the fire-box of a locomotive-type boiler for removing sediment from the same without having recourse to the necessity of frequent washing out.

As is well known, sediment from the water in locomotive-type boilers is deposited in the locality of the foundation-ring of the waterspaceof the fire-box.

I am aware that it is not new to fit an apparatus in the water-space of the fire-box of a locomotive-type boiler for the purpose of blowing off the sediment therein, such as perforated pipes, which substantially surround the fire-box and are secured in the waterspace at a suitable distance from the mudring; but in such apparatus the fire-boxes of existing boilers have to be modified to a certain extent or the stays or foundation-ring removed in order that the same may be put into position.

The object of my invention is the construc tion of an apparatus which can be inserted in the water-spaces of locomotive-type boilers, especially existing ones, without removing any of the stays or the necessity of making any alteration beyond increasing the size of the mud-hole doors situated at the corners of the fire-box and providing a hole or holes in the foundation-ring, to which means are secured for blowing off.

To attain the object of my invention, I place a trough-shaped vessel, having closed ends, in the water-space, the open portion of the same resting on the foundation-ring of the fire-box. Apertures are formed in each of the side walls of the trough, so that when the sediment is being blown out through the aperture in the foundation-ring at a point near the center of the trough sediment will also be attracted from the farther portions of the water-space, The blow-off aperture is preferably situated in the center of the foundation-ring on each side of the water-spaces.

The mud-hole-door apertures at the outside corners of the fire-box are enlarged sufficiently to allow of the apparatus being readily slid endwise into the water-space.

The accompanying drawings illustrate means suitable for carrying out my invention, Figure l, a sectional plan of the firebox of a locomotive-type boiler, showing the arrangements of the inverted-trough-shaped receptacles in the water-spaces; Fig. 2, section through the foundation-ring of fire-box and inverted-trough-shaped receptacle; Fig. 3, inverted plan of fire-box, showing the connections to each aperture in the foundationring in each of the side water-spaces Fig. 4, elevation of a portion of the fire-box, showing the connection to the aperture in the foundation-ring; Fig. 5, plan of open portion of trough-shaped receptacle, shown with a portion broken off.

In this construction of my invention 1 place a trough-shaped vessel on, having closed ends, in the water-space b, the walls of the open portion of the same resting on the foundation-ring c of the water-space of the firebox. The apparatus should be nearly the length of the water-space, the sides, resting on the foundation-ring, being cut vertically at c or thereabout for a short distance, so as to admit of apertures being formed by turning one portion of the wall outward and one portion inward. A number of these apertures are formed in the side walls of the trough a, so as to admit of the sediment being withdrawn from the farther points of the waterspace.

I may in some instances increase the area of the apertures as they recede from the draw-off aperture, the increased area being formed by increasing the length of the vertical cut in the wall of the apparatus, so admitting of easily bending the side wall to a further extent.

The total area of the apertures 0 should be slightly less than the area of the blow-off hole (1 in the foundation-ring 0, so as to insure as far as possible that the whole of the sediment in the space covered by the inverted trough a shall be blown out. This would then enable the sediment on the foundationring 0, surrounding the exterior of the inverted trough a, being attracted through the aperture thereon and blown out.

be retained in the proper position by setaperture (Z in each side of the fire-b ox found a- 0 of the inverted-trough-shaped receptacle 0 formed, I declare that what I claim isabled to keep the bottom row of stays'i close bolts e, screwed in from the side of the firebox it and bearing near the top side of the apparatus. The side portions of the walls of the trough are provided with means, such as a rivet f, which abuts against the side of the fire-box.

The blow-0H pipe 9 passes around under the foundation-ring and is provided with T- pieces 9, by which connection is made to the tion-ring. The pipe 9 is provided with a valve 9 for blowing-off purposes By this method of construction I am ento the foundation-ring and. still be able to readily remove the trough apparatus for removing hard scale.

The mud-hole-door apertures j at the outside corners are enlarged sutliciently to allow being readily slid endwise into the waterspace. It w1ll be seen that the mud-holedoor apertures are arranged at cross-corners,

which, it will be obvious, is sul'licient to allow'two of the inverted troughs being slid into their position in the water-space.

Having now particularly described and. ascertained the nature of my said invention and in what manner the same is to be per- 1. A device of the kind described comprising an inverted trough shaped receptacle having its ends closed and having its side walls provided with apertures, substantially as described.

2. A device of the kind described comprising an inverted trough shaped receptacle l having its side walls provided with series of 1 vertical slits, said walls being bent adjacent to said slits to form apertures therein, substantially as described.

3. A device of the kind described comprising an inverted -trough shaped. receptacle having its side walls provided with series ol vertical slits, said walls being bent adjacent to said slits to form inletports all of said ports being directed toward a point midway between the ends of said trough-shaped receptacle, substantially as described.

4. The combination with a fire-box having a water-space provided with a foundationring, of inverted-trough-shapeil receptacles resting upon said. foundation-ring, and provided with apertures in the sides thereof, projecting portions on one side of said troughshaped receptacle bearing against one wall of said water-space, set-screws in the other wall of said water-space for retaining said troughshaped receptacle in position and means connected with said foundation-ring for blowing ol'l' sediment, substantially as described.

5. The combination with a fire-box having water-spaces provided with a foumlationring, of inverted-trough-shaped receptacles resting directly on said found ation-ring, said receptacles having their ends closed and having their side walls provided with series of apertures, and blow-oil means having ports directly under and midway between the ends of said receptacles, substantially as described.

6. The combination with a Tire-box, having water-spaces provided with a foundation ring, of inverted-trough-shaped receptacles resting on said l'oundation-ring, a blowo'll port directly under each of said inverted receptacles, each of said receptacles having slits in the walls thereof and having its walls adjacent to saidv slits bent to form a series of inlet-ports, all of said ports being directed toward the blowofl port, substantially as described.

GEOFFREY HOPE PEARSON.

Witnesses C. G. REDFERN, A. ALBUTT. 

